U.S., China Ties Tested in Cyberspace

Ties between China and the U.S., strained by military rivalries and maritime disputes, may face an even greater test from the newest front in global conflict: cyberspace.

U.S. military and homeland security officials quietly have long blamed the Chinese military for the most egregious assaults on U.S. computer networks. Continued hacking and data theft, however, are being met by an increasing willingness by Washington to publicly...